<div class="apiDetail">
	<div>
		<h2>
			<span>Function(filter, isSingle, parentNode, invokeParam)</span><span class="path">zTreeObj.</span>getNodesByFilter
		</h2>
		<h3>
			Overview<span class="h3_info">[ depends on <span class="highlight_green">jquery.ztree.core</span> js ]
			</span>
		</h3>
		<div class="desc">
			<p></p>
			<div class="longdesc">
				<p>Search the single node's data or collection of nodes's data by custom rules.</p>
				<p class="highlight_red">Can be customized complex search rules.</p>
				<p class="highlight_red">Please use zTree object to executing the method.</p>
			</div>
		</div>
		<h3>Function Parameter Descriptions</h3>
		<div class="desc">
			<h4>
				<b>filter</b><span>Function</span>
			</h4>
			<p>Custom search function. e.g. function filter(node) {...}</p>
			<p>filter's parameter: node (node's data -- JSON)</p>
			<p>filter's return: boolean (true means: match the rules; false means: don't match the rules)</p>
			<h4 class="topLine">
				<b>isSingle</b><span>Boolean</span>
			</h4>
			<p>isSingle = true means: search only one node</p>
			<p>isSingle = false means: search the array of the nodes</p>
			<p class="highlight_red">If this parameter is omitted, as same as false</p>
			<h4 class="topLine">
				<b>parentNode</b><span>JSON</span>
			</h4>
			<p>The search range, you can search node from a parent node's child nodes.</p>
			<p class="highlight_red">If this parameter is omitted, zTree will search node from all nodes.</p>
			<h4 class="topLine">
				<b>invokeParam</b><span>anything</span>
			</h4>
			<p>Custom data object by user, used to calculate in the filter function.</p>
			<h4 class="topLine">
				<b>Return </b><span>Array(JSON) / JSON</span>
			</h4>
			<p>If isSingle = true, will return the first node's data (JSON) what be matched. If no match, return null.</p>
			<p>If isSingle = false, will return the array of all nodes's data what be matched. if no match, return [ ].</p>
		</div>
		<h3>Examples of function</h3>
		<h4>1. Search the nodes which their 'name' contains 'test' and 'level' is 2.</h4>
		<pre xmlns="">
			<code>function filter(node) {
    return (node.level == 2 && node.name.indexOf("test")>-1);
}
......
var treeObj = $.fn.zTree.getZTreeObj("tree");
var node = treeObj.getNodesByFilter(filter, true); // search only one node
var nodes = treeObj.getNodesByFilter(filter); // search the array of the nodes
</code>
		</pre>
	</div>
</div>